Good thought, Jan!
A keyhole scarf could cinch up and become a 'noose'. The mother would need to keep a close watch on her baby with any scarf around the neck, which I'm sure she will do! Babies like to tug on anything they get their little mitts on! Even pacifiers attached to a cord hanging around the neck to prevent the pacifier falling onto the floor. My daughter's have done that. I wasn't smart enough. I just carried lots of spares!
But now that I think about it, I was smarter than I realized.
It's hard to anticipate all the perils a baby or toddler can fall into!
But we try, don't we! I sometimes wonder how I managed to raise 5! Oy.